Sudden extreme wifi upload bufferbloat

Installing and Using OpenWrt Network and Wireless Configuration
1

Hey all, I am using a TP Link Archer AX23 running the latest Openwrt 23.05.04, Which is connected to a RPI4 running the same openwrt release and conducting SQM on a 300/350 connection.

I unfortunately don't have any devices with a ethernet port and hence can't determine if wifi is the issue or its the whole setup.

I am unsure what changed because some time back i fine tuned my AQL settings and achieved near 0ms bufferbloat on upload while getting a speed of over 200mbps.

Now, I am getting upwards of 300ms bufferbloat over wifi.

https://www.waveform.com/tools/bufferbloat?test-id=f8c5768d-8ed1-433b-b428-7e90ad8c159b

Compare that to

https://www.waveform.com/tools/bufferbloat?test-id=f3301348-2874-4eb3-9028-00f7d1ccb5a1

{
        "kernel": "5.15.162",
        "hostname": "OpenWrt",
        "system": "MediaTek MT7621 ver:1 eco:4",
        "model": "TP-Link Archer AX23 v1",
        "board_name": "tplink,archer-ax23-v1",
        "rootfs_type": "squashfs",
        "release": {
                "distribution": "OpenWrt",
                "version": "23.05.4",
                "revision": "r24012-d8dd03c46f",
                "target": "ramips/mt7621",
                "description": "OpenWrt 23.05.4 r24012-d8dd03c46f"
        }
}

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fdc2:b207:2428::/48'
        option packet_steering '0'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option ipaddr '192.168.0.2'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option gateway '192.168.0.1'
        option delegate '0'
        list dns '192.168.0.1'

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fdc2:b207:2428::/48'
        option packet_steering '1'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'lan1'
        list ports 'lan2'
        list ports 'lan3'
        list ports 'lan4'

config interface 'lan'
        option device 'br-lan'
        option proto 'static'
        option ipaddr '192.168.0.2'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option gateway '192.168.0.1'
        option delegate '0'
        list dns '192.168.0.1'

root@OpenWrt:~# cat /etc/config/wireless

config wifi-device 'radio0'
        option type 'mac80211'
        option path '1e140000.pcie/pci0000:00/0000:00:01.0/0000:02:00.0'
        option band '2g'
        option htmode 'HE20'
        option cell_density '0'
        option channel 'auto'
        option country 'IN'

config wifi-iface 'default_radio0'
        option device 'radio0'
        option network 'lan'
        option mode 'ap'
        option ssid 'TP-Link_F5B2'
        option encryption 'sae-mixed'
        option key '31july2006Ar'

config wifi-device 'radio1'
        option type 'mac80211'
        option path '1e140000.pcie/pci0000:00/0000:00:01.0/0000:02:00.0+1'
        option channel '161'
        option band '5g'
        option htmode 'HE80'
        option cell_density '0'
        option country 'IN'

config wifi-iface 'wifinet1'
        option device 'radio1'
        option mode 'ap'
        option ssid 'TP-Link_F5B2_5Ghz'
        option encryption 'sae'
        option key '31july2006Ar'
        option network 'lan'

config wifi-iface 'wifinet2'
        option device 'radio1'
        option mode 'ap'
        option ssid 'TP-Link_F5B2_5Ghz'
        option encryption 'psk2'
        option key '31july2006Ar'
        option network 'lan'
        option disabled '1'

I have manually disabled the DHCP and Firewall services on the AX23 and let the RPI4 handle those.

2

Check speed.cloudflare.com fast.com or ookla - maybe some short lived glitch.

1 Like
3

image
image1920×887 43.8 KB

image
image1016×660 19.5 KB

image
image1920×887 28.7 KB

https://i.imgur.com/tl3BxFc.png

https://i.imgur.com/1m3st7W.png

Upload speeds are really low on ookla, I should be getting close to 300.

4

Defintely not a glitch

https://www.waveform.com/tools/bufferbloat?test-id=e0f13d46-85af-48fd-bf09-cd7ffdb97ae9

Today

5

Well - dont run torrents wile gaming, your router cannot do SQM at those speeds.

6

Sorry? The RPI4 can do SQM at far higher speeds, Also none of my torrents were uploading or downloading.

Did you perhaps reply to the wrong thread?

7

Does this happen if you flash your wifi ap with 23.05.3?

8

not raspberry.

9

The AX23 isn't doing SQM?

The RPI4 is

10

Pretty sure this started from the latest version, unsure if I can downgrade, seeing a lot of conflicting info on the internet.

11

There is an issue with wifi speed in 23.05.4 , you can downgrade to 23.05.3 in place, upgrade to 23.05-SNAPSHOT or wait until 23.05.5 is out.

1 Like
12

You can downgrade, why wouldn't you be able to? Archer AX23 is supported since 23.05.0.

13

As long as the user doesn't need to reset to defaults. If so, they'll need a custom firmware with WiFi enabled. Luckily the Firmware Selector can create one.

15

Will i need to get rid of all my configs to downgrade? can't i just sysupgrade like before keeping all the configs?

16

Backup config, but unless you have exotic packages everything will be maintained all ways in 23.05.0---23.05-snapshot

17

Which interface do you use for SQM (sorry if i missed in in your shell output)?
I had issues with SQM after rebooting the device when i used the radio interface in the SQM settings. They seem to take a while until they are up... .

18

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.